A307806 - OEIS

A307806 as a simple table

n	a(n)
1	1
2	1
3	1
4	0
5	3
6	1
7	5
8	3
9	6
10	1
11	51
12	25
13	15
14	10
15	1
16	3634
17	381
18	90
19	45
20	15
21	1
22	374119
23	26509
24	1596
25	280
26	105
27	21
28	1
29	73161880
30	3095579
31	111370
32	5061
33	770
34	210
35	28
36	1
37	26545249985
38	671957334
39	14411205
40	353262
41	13671
42	1890
43	378
44	36
45	1

[1,1,1,0,3,1,5,3,6,1,51,25,15,10,1,3634,381,90,45, 15,1,374119,26509,1596,280,105,21,1,73161880, 3095579,111370,5061,770,210,28,1,26545249985, 671957334,14411205,353262,13671,1890,378,36,1]